Home / 156,432,772.90-215,877,463.07-84,905,680.11

Finding the Fourth Proportional to 156,432,772.90, 215,877,463.07 and 84,905,680.11

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Solution

The fourth proportional to 156,432,772.90, 215,877,463.07 and 84,905,680.11 is: 117,169,966.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,432,772.90 : 215,877,463.07 = 84,905,680.11 : x
  2. Step 2: Convert to fraction form
    156,432,772.90/215,877,463.07 = 84,905,680.11/x
  3. Step 3: Cross multiply
    156,432,772.90x = 215,877,463.07 × 84,905,680.11
  4. Step 4: Simplify right side
    156,432,772.90x = 18,329,222,821,145,692
  5. Step 5: Solve for x
    x = 18,329,222,821,145,692/156,432,772.90
  6. Step 6: Final answer
    x = 117,169,966.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.